United States. Department of Agriculture. Office of the Secretary. (1928). Tuberculin testing of livestock. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary. Tuberculin Testing of Livestock. Washington: U.S. GPO, 1928.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary. Tuberculin Testing of Livestock. U.S. GPO, 1928.
Warning: These citations may not always be 100% accurate.